Encased oil core microcapsules

Abstract

Disclosed is a method for generating capsules with a matrix shell encasing an oil core. The method includes: providing in a first chamber a core-forming emulsion of an aqueous dispersed phase in an oil phase including water and a dissolved gelation-inducing agent, and a first surfactant; providing in a second chamber a second aqueous solution including water and a second surfactant; wherein the first chamber and the second chamber are fluidically connected by one or more channels; guiding the core-forming emulsion from the first chamber through the channel(s) into the second chamber to form a dispersion of the core-forming emulsion in the aqueous solution; mixing the dispersion with an aqueous shell-forming solution including water and a water soluble matrix-forming agent; and reacting the gelation-inducing agent and the matrix-forming agent in the formed dispersion to form capsules of a water insoluble matrix shell encasing an oil core.